Evidence supporting the use of: Blueberry
For the health condition: Cataracts

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Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Blueberry (Vaccinium spp.) has a longstanding reputation in traditional and folk medicine for supporting eye health, particularly in the context of conditions like cataracts and night vision. This stems largely from historic uses of related berries such as bilberry, which British pilots reportedly consumed during World War II to improve their night vision. Blueberries, like bilberries, are rich in anthocyanins—plant compounds believed to have antioxidant properties that may protect eye tissues from oxidative stress, a factor involved in cataract formation.

However, direct scientific evidence supporting the use of blueberries specifically for the prevention or treatment of cataracts is limited. The majority of studies have focused on the antioxidant potential of berry extracts in general or bilberry in particular, with only a few small studies suggesting possible protective effects against oxidative damage in eye tissues. Clinical trials in humans directly linking blueberry consumption to a decreased risk or reversal of cataracts are lacking. Most evidence is preclinical (from animal or in vitro studies) and theoretical, based on the general benefits of antioxidants.

In summary, while the traditional use of blueberries for eye health is well established, there is only weak scientific support for their specific role in cataract prevention or treatment. More robust clinical research is needed to validate these traditional claims.

More about blueberry
More about Cataracts

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